Sergey Bugaev e55a55acb1 hurd: Avoid extra ctty RPCs in init_dtable () ...

It is common to have (some of) stdin, stdout and stderr point to the
very same port. We were making the ctty RPCs that _hurd_port2fd () does
for each one of them separately:

1. term_getctty ()
2. mach_port_deallocate ()
3. term_open_ctty ()

Instead, let's detect this case and duplicate the ctty port we already
have. This means we do 1 RPC instead of 3 (and create a single protid
on the server side) if the file is our ctty, and no RPCs instead of 1
if it's not. A clear win!

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>

2023-04-17 14:08:12 +02:00

..

hurd

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alloc-fd.c

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catch-exc.c

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catch-signal.c

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compat-20.c

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ctty-input.c

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ctty-output.c

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Depend

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dtable.c

hurd: Avoid extra ctty RPCs in init_dtable ()

2023-04-17 14:08:12 +02:00

exc2signal.c

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faultexc.defs

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fchroot.c

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fcntl-internal.h

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fd-cleanup.c

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fd-close.c

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fd-read.c

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fd-write.c

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fopenport.c

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get-host.c

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getdport.c

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geteuids.c

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getumask.c

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hurd-raise.c

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hurd.h

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hurdauth.c

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hurdchdir.c

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hurdexec.c

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hurdfault.c

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hurdfault.h

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hurdfchdir.c

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hurdhost.h

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hurdid.c

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hurdinit.c

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hurdioctl.c

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hurdkill.c

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hurdlock.c

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hurdlock.h

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hurdlookup.c

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hurdmalloc.c

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hurdmalloc.h

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hurdmsg.c

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hurdpid.c

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hurdports.c

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hurdprio.c

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hurdrlimit.c

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hurdselect.c

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hurdsig.c

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hurdsock.c

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hurdsocket.h

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hurdstartup.c

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hurdstartup.h

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intern-fd.c

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intr-msg.c

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intr-rpc.defs

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intr-rpc.h

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longjmp-ts.c

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lookup-at.c

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lookup-retry.c

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Makefile

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msgportdemux.c

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new-fd.c

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Notes

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openport.c

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path-lookup.c

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pid2task.c

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port2fd.c

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port-cleanup.c

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ports-get.c

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ports-set.c

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preempt-sig.c

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privports.c

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report-wait.c

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RPC_gsync_wait_intr.c

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set-hooks.h

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set-host.c

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setauth.c

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seteuids.c

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siginfo.c

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sigunwind.c

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stack_chk_fail_local.c

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task2pid.c

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thread-cancel.c

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thread-self.c

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trampoline.c

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Versions

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vpprintf.c

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xattr.c

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